METALS. 82. Argentum, 
Light red filver ore. Kir^an mineral 2. *. 122. 
Light red filver ore. Thomfon them. 4. f, 25. 
?. Colour between dark red and lead-grey, or pearly black: 
Wreak dark crimfon red. 
l^ai'k filver ore. Kirnnan miner, z. f. i 23. 
Ruby filver ore. Schmetjer miner. 2. p. 46. 
Dark red filver ore. Thomjbn chem. 4. p. 2g, 
found in various mines of Peru, Chili, France, Spain, Germanji 
Saxony, Hungary, &c. with arlenic, galena, or other ores of 
filver, Jn tnafies, or diileminated, fometimes lhala( 51 itical or 
botrypidaL or cyilallized in fmall prifms or acicular pyr*' 
niids, or radiated ip a Itellatc manner : jt differs much in 
degree of tranfparcncy, colour, texture, and form; it is 
friable or brittle, but (o foft as to be cut with a knife; when 
broken it has a glaffy Appearance, and when feraped with a 
knife the particles appear fcarlet ; texture flat conchoidal, or 
approaching to the foliated : when heated it crackles, and 
melts very eafily before the blowpipe, blackening, burning 
with a blue flame, and giving out a white fmoke with a 
flight fmell of garlic ; it becomes elearic by friaion, but 
only when infulated; and is foluble in nitric acid without 
effervefepnee ; it detonates with nitre when thrown into * 
red hot crucible, and becomes then capillary filver; fpecific 
gravity from 5,440, to 5,69a. contains fiiver 56. antimony 
16. fulphur 15. oxygen 12. and a little arfenic. Klaproth. 
Ppake, with a metallic luftre, compaft, ponderous, of 3 
pale lead colour externally and when feraped, emit- 
ting fulphurous and arfenical vapours when burnti 
brittle. 
Argent, mineralifat. cupri, &c. SyU. sat. xii. i- p. 149. n. 5. 
Argent, arfenico, &c. Wall./yjt. 2, p. 334 ». 5. 
Argent, arfenico, Sec. Cron/t. mineral Ji 3 . ijo. 3. 3. 
Plumbiferous filver ore. Kimuan mineral. 2. p, 1 19. 
Grey filver ore. Schmet/ser mineral, a. p. 52. 
Found in the mines of Saxony, Bohemia, Hungary, Sicily, Sec. 
generally imbedded in quartz and other minerals: it contains 
generally about ) 5 per cent, of filver, the remainder being 
made up of fulphur, arfenic, copper, and iron in various 
proportions : when feraped it exhibits a brighter furface but 
of the fame colours it breaks into indeterminate fragments, 
and is of a fiat texture; it is generally found of a common 
form, rarely cryllallizcd s is brittle, but fo foft as to be cut 
with a knife. 
